123普通手機DATA PLAN係咪可以自由升級合約?

http://one2free.hkcsl.com/jsp/service_charges/one2free_service_plan/one2free_service_plan.jsp
SMC合約月尾到期
想係123出新IPHONE PLAN
未出就唯有出住普通PLAN先啦...

123 D 職員話帶機上台($267 PLAN)大多數可以升去買機PLAN
佢話"大多數"唔話"一定"令我有D擔心
各位巴打有冇遇過失敗經驗呢?